And with 11.7, SDK 2.1 I get the highest Mhash/s. So I'll be still using the poclbm phatk kernel.Pretty much same goes for 11.6, which seems to perform slightly slower than 11.7, but otherwise all same.

I'm not sure how or why it seemed as if your kernel was boosting my Mhash, when I first tried it, but with my current setup, unfortunately poclbm phatk wins.

And with 11.7, SDK 2.1 I get the highest Mhash/s. So I'll be still using the poclbm phatk kernel.Pretty much same goes for 11.6, which seems to perform slightly slower than 11.7, but otherwise all same.

I'm not sure how or why it seemed as if your kernel was boosting my Mhash, when I first tried it, but with my current setup, unfortunately poclbm phatk wins.

The ATI 110619a-121104E file doesn't include a 11.7 video driver for OSs other than Windows 7. It does have a new AMD APP SDK, version 2.5.684.24. The package also installs drivers for ATI TV Wonder 600 USB and Hydravision (WTF?), so if you want to try out the new SDK, be sure to do a custom install and uncheck the other stuff.

That being said, the new SDK makes no difference for me. I've ran 10.11 and 11.6 drivers on 2.4 and 2.5 SDK with identical benchmarks on all in a very repeatable setup. However your patch does make a difference! The improvement on my overclocked 5830 (1070/392, WinXPsp3 stripped, Sempron 2.7ghz):

The ATI 110619a-121104E file doesn't include a "11.7" video driver. It does have a new AMD APP SDK, version 2.5.684.24. The package also installs drivers for ATI TV Wonder 600 USB and Hydravision (WTF?), so if you want to try out the new SDK, be sure to do a custom install and uncheck the other stuff.

That being said, the new SDK makes no difference. I've ran 10.11 and 11.6 drivers on 2.4 and 2.5 SDK with identical benchmarks on all in a very repeatable setup. However your patch does make a difference! The improvement on my overclocked 5830 (1070/392, WinXPsp3 stripped, Sempron 2.7ghz):

Before: 340.21 Mhash/sAfter: 341.59 Mhash/sImprovement: 0.41%

I haven't run it long enough to see if it increases rejects or stales, but I will report back. This is looking good (but it will take a week of mining with the patch to even make up for my 30 minutes downtime...)

What is your setting? How you make 340 with 5830? i am on 307max with same cards.You know from where to download the "11.7" video driver?

Seems good, but it brings no gain for me ... weird. Will look into this and perhaps re-use your idea, if I may .Can only think of a good compiler optimization...

It is not obvious that this will gain anything. On the contrary, unless the compiler optimize it away, it makes the second and third instruction dependant on the first. This is bad on a GPU which issues 4 or 5 instructions in parallel every clock cycle.

Sjå http://bitmynt.no for veksling av bitcoin mot norske kroner. Trygt, billig, raskt og enkelt sidan 2010.I buy with EUR and other currencies at a fair market price when you want to sell. See http://bitmynt.no/eurprice.plI support the roadmap. If a majority of miners ever try to forcefully take control of Bitcoin through a hard fork without 100% consensus, I will immediately split out and dump all my forkcoins, and buy more real Bitcoin.

Testing my new Sapphire 5850I need new PSU and watercooling for the card to make it stable. Currently running cards (overnight) steady at 412 Mh/s @ 1030 MHz core and other one ~360 Mh/s @ 950 core because only AGGRESSION=8. Psu is Corsair 450W so cannot OC & OV both cards to the max. For the first card this mod gave increase from 401-> 412 while card is running @ 1030 core.